Curated issues
Compilers Good First Issues
Open issues about Compilers from GitHub projects in every language. The list opens on the ones we rated beginner-friendly, and the subject's other names are matched too.
Compilers
- Open issues
- 168k
- New this week
- 3.4k
- Nobody on it yet
- 155k
- Average difficulty
- 4.1/5
What this list is like
- Average annotated difficulty: 4.1/5 across 191,048 issues.
- 4% of 191,048 time estimates are one day or less.
Updated Nov 9, 2026.
About Compilers
Compilers and interpreters turn source code into something a machine can run. Work here includes parsers, type checkers, code generation, optimisation passes and language tooling.
Issues somebody may already be working on are listed last. List everything by date
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Difficulty 2/5 1-3 hours Newbie friendliness 76/100
voidzero-dev/oxc-angular-compiler#686 ·
Maintainers usually reply within 1 day
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Difficulty 2/5 1-3 hours Newbie friendliness 72/100
godotengine/godot#125272 ·
Maintainers usually reply within 1 day
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Difficulty 2/5 1-3 hours Newbie friendliness 73/100
Maintainers usually reply within 1 day
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Difficulty 2/5 1-3 hours Newbie friendliness 78/100
Maintainers usually reply within 1 day
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Difficulty 2/5 1-3 hours Newbie friendliness 76/100
Maintainers usually reply within 1 day
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bug compiler copilot good first issue help wanted
Difficulty 2/5 1-3 hours Newbie friendliness 82/100
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Difficulty 2/5 1-3 hours Newbie friendliness 78/100
Maintainers usually reply within 1 day
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bug front-end
Difficulty 2/5 1-3 hours Newbie friendliness 78/100
Maintainers usually reply within 1 day
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bug front-end
Difficulty 2/5 1-3 hours Newbie friendliness 75/100
Maintainers usually reply within 1 day
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Difficulty 2/5 1-3 hours Newbie friendliness 73/100
Maintainers usually reply within 1 day
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Difficulty 2/5 1-3 hours Newbie friendliness 75/100
Maintainers usually reply within 1 day
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Difficulty 2/5 1-3 hours Newbie friendliness 72/100
xdslproject/xdsl#6720 · 1 reaction ·
Maintainers usually reply within 1 day
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bug
Difficulty 2/5 1-3 hours Newbie friendliness 76/100
flyingrobots/edict#306 ·
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Diagnostics: an ambiguous overloaded call names neither the argument types nor the tied candidatesOpenbug priority: P3
Difficulty 2/5 1-3 hours Newbie friendliness 73/100
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Upstream report: MSVC rejects a designated initializer in a dependent template argument (C2131)Open
Difficulty 2/5 1-3 hours Newbie friendliness 75/100
rhalbersma/tabula#72 ·
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The self-hosted linker miscompiles every signed right shift (`ashr`): opts 121 unpacks to oplen = 1Openbug linker selfhost sev-5
Difficulty 2/5 1-3 hours Newbie friendliness 78/100
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bug priority: P2
Difficulty 2/5 1-3 hours Newbie friendliness 78/100
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bug
Difficulty 2/5 1-3 hours Newbie friendliness 84/100
tree-sitter/tree-sitter-cpp#381 ·
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clang:codegen crash
Difficulty 2/5 1-3 hours Newbie friendliness 72/100
llvm/llvm-project#240065 · 1 comment ·
Maintainers usually reply within 1 day
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Difficulty 2/5 1-3 hours Newbie friendliness 65/100
Maintainers usually reply within 2 days
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better error message intrinsic low priority semantics
Difficulty 2/5 1-3 hours Newbie friendliness 78/100
Maintainers usually reply within 1 day
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Difficulty 2/5 1-3 hours Newbie friendliness 77/100
swc-project/swc-ai-issues#154 ·
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Difficulty 2/5 1-3 hours Newbie friendliness 77/100
CanadaHonk/porffor#452 ·
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crash generated by fuzzer mlir:amdgpu
Difficulty 2/5 1-3 hours Newbie friendliness 68/100
llvm/llvm-project#239941 ·
Maintainers usually reply within 1 day
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Difficulty 2/5 1-3 hours Newbie friendliness 77/100
JPHutchins/dynamic-call-tree-resolution#349 ·
Maintainers usually reply within 1 day
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Bisect issue239932Openbisect
Difficulty 2/5 1-3 hours Newbie friendliness 70/100
dtcxzyw/llvm-bisect-service#800 ·
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Difficulty 2/5 1-3 hours Newbie friendliness 66/100
limitlessprojects/Go-Hybrid#3990 · 2 comments ·
Maintainers usually reply within 1 day
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Difficulty 2/5 1-3 hours Newbie friendliness 68/100
swc-project/swc-ai-issues#114 ·
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Difficulty 2/5 1-3 hours Newbie friendliness 68/100
swc-project/swc-ai-issues#66 ·
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Difficulty 2/5 1-3 hours Newbie friendliness 78/100
AdaptiveCpp/AdaptiveCpp#2312 · 1 comment ·
Maintainers usually reply within 2 days
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Difficulty 2/5 1-3 hours Newbie friendliness 76/100
swc-project/swc-ai-issues#12 ·
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Difficulty 2/5 1-3 hours Newbie friendliness 77/100
fable-compiler/Fable#5280 ·
Maintainers usually reply within 1 day
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Difficulty 2/5 1-3 hours Newbie friendliness 75/100
Maintainers usually reply within 1 day
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Difficulty 2/5 1-3 hours Newbie friendliness 78/100
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Difficulty 2/5 1-3 hours Newbie friendliness 79/100
Dinnerbone/Rascal#92 · 1 comment ·
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bug gc sev-3
Difficulty 2/5 1-3 hours Newbie friendliness 76/100
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bug gc sev-2
Difficulty 2/5 1-3 hours Newbie friendliness 76/100
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Difficulty 2/5 1-3 hours Newbie friendliness 66/100
Maintainers usually reply within 1 day
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pkg:crucible-mir type:bug
Difficulty 2/5 1-3 hours Newbie friendliness 75/100
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bug frontend gc sev-3
Difficulty 2/5 1-3 hours Newbie friendliness 88/100
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bug
Difficulty 2/5 1-3 hours Newbie friendliness 78/100
GaloisInc/llvm-pretty#211 · 1 comment ·
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bug good first issue self-hosted compiler
Difficulty 2/5 1-3 hours Newbie friendliness 85/100
AeroForger/AeroFyl#1 ·
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bug parser
Difficulty 2/5 1-3 hours Newbie friendliness 76/100
swc-project/swc-next-issues#221 ·
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crash lld:COFF
Difficulty 2/5 1-3 hours Newbie friendliness 70/100
llvm/llvm-project#239529 · 1 comment ·
Maintainers usually reply within 1 day
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crash lld:COFF
Difficulty 2/5 1-3 hours Newbie friendliness 72/100
llvm/llvm-project#239491 · 1 comment ·
Maintainers usually reply within 1 day
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Difficulty 2/5 1-3 hours Newbie friendliness 63/100
KhronosGroup/SPIRV-LLVM-Translator#4151 ·
Maintainers usually reply within 2 days
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Difficulty 2/5 1-3 hours Newbie friendliness 78/100
anthropics/claudes-c-compiler#322 ·
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Difficulty 2/5 1-3 hours Newbie friendliness 78/100
anthropics/claudes-c-compiler#318 ·
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bug medium priority openmp parser
Difficulty 2/5 1-3 hours Newbie friendliness 78/100
Maintainers usually reply within 1 day
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better error message error not reported ICE medium priority openmp parser
Difficulty 2/5 1-3 hours Newbie friendliness 78/100
Maintainers usually reply within 1 day
Showing the newest 100
This page lists what was indexed most recently. Advanced filter has the whole inventory, narrowed by language, difficulty and how long a task takes.
Projects with the most open issues here
- llvm/llvm-project — merges 39% of outside contributors' pull requests
- rust-lang/rust — merges 50% of outside contributors' pull requests
- swiftlang/swift — merges 64% of outside contributors' pull requests
- lfortran/lfortran — merges 77% of outside contributors' pull requests
- microsoft/TypeScript — merges 23% of outside contributors' pull requests
Related pages
Questions
- How many Compilers issues are open here?
- 168,486 open issues: 3,432 opened in the last seven days, and 154,573 with nobody working on them yet. We count them once a day.
- Where do I start?
- Pick an issue marked beginner-friendly, read the project's contributing guide and comment before you begin. The contributor guide walks through it, from choosing an issue to your first pull request.
- Can you pick one for me?
- Yes: sign in with GitHub and Your next issue shows one open issue nobody has claimed, matched to your languages, your time and the difficulty you want.